Aluminum cylinder heads

fishmens67 said

I had to do that with my first set.
Geometry correction solves that problem
Most rocker arm failures are do to improper geometry.

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Pushrods were measured precisely. The problem was in the rocker arm itself. I've installed about every rocker arm assembly made and never had the problems like with these. Install height was checked. Everything was checked but still the rocker arm hit the retainer.